CVE-2025-30452 is a critical security vulnerability identified in Apple macOS, categorized under CWE-20 (Improper Input Validation). The vulnerability arises from insufficient validation of input data, which can be exploited remotely without requiring any authentication or user interaction. This flaw affects multiple recent macOS versions, including Ventura 13.7.5, Sequoia 15.4, and Sonoma 14.7.5. The vulnerability’s CVSS 3.1 base score is 9.8, reflecting its critical severity due to the ease of exploitation (network attack vector, no privileges or user interaction needed) and the potential for complete compromise of confidentiality, integrity, and availability of affected systems. Apple has addressed the issue by implementing improved input validation checks in the affected macOS versions. Although no active exploits have been reported in the wild, the vulnerability represents a significant risk given the widespread use of macOS in enterprise environments. Attackers exploiting this flaw could execute arbitrary code, escalate privileges, or cause denial of service, leading to full system compromise. The lack of detailed public technical information about the exact nature of the input validation flaw limits deeper technical analysis, but the critical CVSS score and Apple’s patch releases underscore the importance of timely remediation.

For European organizations, the impact of CVE-2025-30452 could be severe. Exploitation could lead to unauthorized access to sensitive data, disruption of critical services, and potential lateral movement within networks. Sectors with high macOS adoption such as technology companies, financial institutions, government agencies, and creative industries face heightened risk. The vulnerability’s remote exploitability without authentication or user interaction increases the likelihood of automated attacks and wormable scenarios, potentially affecting large numbers of devices rapidly. Data confidentiality could be compromised, integrity of systems and data altered, and availability disrupted through denial-of-service conditions or system crashes. The reputational damage and regulatory consequences under GDPR for data breaches could be significant. Additionally, supply chain risks exist if compromised macOS systems are used to access or manage other critical infrastructure components.

European organizations should immediately deploy the security updates released by Apple for macOS Ventura 13.7.5, Sequoia 15.4, and Sonoma 14.7.5 to remediate this vulnerability. Beyond patching, organizations should implement network-level protections such as intrusion detection/prevention systems (IDS/IPS) tuned to detect anomalous traffic patterns targeting macOS devices. Employ strict network segmentation to isolate macOS systems from sensitive environments and limit exposure to untrusted networks. Conduct thorough asset inventories to identify all macOS devices and ensure they are updated promptly. Enhance endpoint detection and response (EDR) capabilities to monitor for suspicious behaviors indicative of exploitation attempts. Educate IT staff on the criticality of this vulnerability and establish rapid incident response procedures. For environments where immediate patching is not feasible, consider temporary mitigations such as firewall rules blocking unnecessary inbound traffic to macOS systems. Regularly review and update security policies to incorporate lessons learned from this vulnerability.